mmm yeah it's not annoying to me but I also haven't followed anyone who's spammed it/posted streams daily. (I don't really see the point in posting about the same stream more than once on tapastic since unlike other sites like tumblr or twitter, your stream isn't getting buried, and that's usually why someone posts more than once on those sites, but I guess some people just get in the habit or just want to make sure people know it's still going?? I'd probably still wind up just ignoring it if this were the case cuz I'm usually too busy to attend streams these days, anyway.)
As others have pointed out, it's the only way to let some folks know you're streaming. They're easy enough to ignore. Well, for me anyway, since I don't check notifications that often in the first place, especially lately (So behind on comments...
I gotta make time to respond to 'em before monday), but I could understand someone finding that disappointing if they have the time to keep up with things and are expecting it to be something else.