David Gallagher Add us as a preferred source on Google
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Followers
644
Account age
3 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor David Gallagher
Known for
40 views
Eureka Valley, June 1900
A view north from 21st and Castro, Corona Heights in the background left. A recent scan from a glass negative by DH Wulzen coming soon to SFMemory.org #sfmemory #sfhistory
32 views
SFMemory Update!
250 Glass Plates from photographer Sam Crow! Showing never seen early aviation, Panama-Pacific International Exposition, 1906 Earthquake, surprise celebrities, & more #sfmemory #sfhistory https://sfmemory.org/Update/2026-06-11
26 views
Still working on the Sam Crow glass negatives, thought you'd like to see a couple of the man himself. I expect to have another 200 or so online by the end of the week. keep checking back! #sfmemory #sfhistory https://sfmemory.org/Gallery/Sam_Crow_Negatives
17 views
Market Street, Aug 23, 1949
One of the problems I face regularly is figuring out what I'm looking at and deciding, while looking at a negative if it's worth scanning, sometimes I don't know. I scanned these night time parade shots from news photog Aaron Rubino because I knew it was Market Street and
📊 Post engagement
Recent posts · likes + reposts
May 25latest
15
Avg engagement / post
8–17
Typical post (engagement)
2.3%
Engagement vs followers
68/100
Consistent reach
Nov 2022
On Mastodon since
Half of recent posts land between 8 and 17 likes + reposts (median 12) — a dependable floor a sponsored post can count on.
🔥 Top post: Eureka Valley, June 1900 A view north from 21st and Castro, Coro · 40 likes + reposts
📊 Activity & format
Posting cadence
1.5 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly images
Recent: 0 text · 12 image · 0 video.
Follower / following
3.9×
Follows 164 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
🔥 Top post
Eureka Valley, June 1900
A view north from 21st and Castro, Corona Heights in the background left. A recent scan from a glass negative by DH Wulzen coming soon to SFMemory.org #sfmemory #sfhistory
Sad News: "Shacktivist" Jane Cryan, the "Cottage Lady, has died. I'm glad to have gotten to know her, she set some of us on a lifelong passage exploring the history of San Francisco SF Chron gift link: https://www.sfchronicle.com/bayarea/…
Thanks for all the love for SFMemory. I'm heading out of town (we have a house sitter!) Currently there are 11,496 images available on the site. please take a look, search an interest or location, and send me a message using the forms on t…
Crystal Palace Market, 1940
The Crystal Palace Market was at 8th & Market, not sure what Orange Kremo was or how it was non-fattening #sfmemory #sfhistory
Market Street, Aug 23, 1949
One of the problems I face regularly is figuring out what I'm looking at and deciding, while looking at a negative if it's worth scanning, sometimes I don't know. I scanned these night time parade shots from new…
SFMemory Update!
250 Glass Plates from photographer Sam Crow! Showing never seen early aviation, Panama-Pacific International Exposition, 1906 Earthquake, surprise celebrities, & more #sfmemory #sfhistory https://sfmemory.org/Update/2026-0…
Still working on the Sam Crow glass negatives, thought you'd like to see a couple of the man himself. I expect to have another 200 or so online by the end of the week. keep checking back! #sfmemory #sfhistory https://sfmemory.org/Gallery/S…
One more among the recent finds: Aaron Rubino's 1941 Christmas card
I say "revisiting" this box because about 18 months ago I posted about 250 shots from it. You can see them on SFMemory. Today there's probably about another 250 news and news-related images coming. here's the link to the Aaron Rubino imag…
Harry Bridges & The Hallinans, circa 1949
It Pays to Keep Looking Department. Revisiting a box of 4x5 negatives by news photographer Aaron Rubino. I came across this shot of Attorney Vincent Hallinan with harry Bridges and a couple of help…
SFMemory Update!
211 images 60's 70s protests, gatherings, 1960 Grant Avenue Fair, International Hotel, transit, a lot of stuff I've been sitting on. #sfhistory #sfmemory https://sfmemory.org/Update/2026-05-29
One of the saloons in question - Jack Seyoe's Winslow/Bridgeport
🐘 Community & instance
Home server
sfba.social
A the SF Bay Area server — its members and audience skew toward that niche, so expect a community-aligned, engaged following.
On Mastodon since
Nov 2022
Joined in the Twitter-exodus wave of late 2022 — part of the migration that made Mastodon a real destination.
💡 Facts
🗓️Joined Mastodon in 2022 — 3 years ago.
👁️Averages 15 views per post.
📤Posts about 1.5× per week.
🕵️ Fake follower check
Estimated66/100
Good
Credibility score
89%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 89% real, active audience · Low fake-follower risk.
- Engagement (~2.3% of followers engage each post) is around typical for Mastodon.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
I ride a bike and look at old pictures all day
#SanFrancisco
📸 Gallery
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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Frequently asked questions
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How many followers does David Gallagher have?
David Gallagher has 644 followers on Mastodon.
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