Other Autograph Sites
PSA AutographFacts - Featuring examples of autographs for easy comparisons; useful when looking to buy or trade.
TTMCast - Jeff Baker's podcast on all things autographs, specifically geared toward the TTM side of the hobby.
SCN: SportsCollectors.net - The best source for autograph addresses and organization; well worth the $15 a year. I'm on the forums as DFWGrapher.
SCF: SportsCardForum - The best free source for autograph addresses. I'm a moderator here, you can find me under the name *censored*.
The Bench - Not sure how active it is anymore, but once an excellent trading forum; I'm HockeyBrawler on here.
The Trove Sports Den - Excellent source for some private signings. I've gone through Adam twice and he was on top of everything very well and keeps prices affordable.
Crave The Auto - A list of autograph signings, all over the country and in many different areas of collecting.
SASE Sports Sigs - Hopefully this small community stays active, but with its founder's 2021 death, we'll see. I haven't been active on their forum at all.
Football Autograph Encyclopedia - All sorts of scans of football autographs (and not just NFL either!)
TTM Hockey Autos - A simple forum for all things related to hockey autographs. I'm DFWGrapher here.
Hockey TTM Graphs - Another simple forum for all things related to hockey autographs. I'm DFWGrapher here too.
StarTiger - Solid (though pricey) site for addresses. Not just sports, but celebrities too.
Blowout Forums - Mostly dedicated to cards, but also has a decent section on autographs and TTMing. I'm DFWGrapher here.
OzCardTrader - An Australian forum dedicated to cards of all kinds-- not just AFL! I'm DFWGrapher here as well.
Puckhound's Blogs - Ron Saar and I were both Boston-area hockey graphers in the early 2000s. He even name-dropped me in a Beckett article ten-ish years ago when he was their writer on hockey autographs (issue #210, maybe?). He died suddenly and unexpectedly in 2016 while watching his son play hockey.
Dave Mitchner - Dave is a fellow autograph collector who has a great site for his collection in a Wiki-style setup. It's still in progress but quite well done so far: if I had the time and patience, I'd do the same.
Pacific Soccer Autograph Project - My blog on everything related to my attempts at getting the 1987/88 through 1992/93 Pacific indoor soccer sets signed.
Sports Card Scammers Database - Know before you trade...
Football Cartophiliac Info Exchange - Alan Jenkins has put together some great info on soccer card sets from all over the world
Trading Card Database - Info on anything and everything in the card world: checklists, variations, errors, rare and oddball sets, you name it, they have it.
Baseball Cardpedia - A baseball card wiki
Keyman Collectibles - Easily the best site I have ever found for baseball card set checklists; they're printable too!
Cardboard Connection - Great for info on release dates and checklists, and how to tell parallels apart
Baseball Almanac - Solid info here on card sets
HockeyDB - Mostly dedicated to stats, but lots of info on hockey sets, with an easily searchable database
NPN Offers - Free cards maybe?! Fair warning, I haven't had luck with the offers in years, unfortunately.