Well, I ordered 13x30 bookmarks and I asked them to do titles and they definitely delivered.
First of all, these guys are merciless with communication. Once you PM them, they will follow up with you and respond to 10,000 questions to get your business. If you have a bad habit of forgetting about social bookmarks, they will change that for you promptly, lol.
I didn't look through all 570 of my bookmarks, but i did look through about 30 and here's what it looks like.
-They submit to all the big boys (Digg, delicious, mr wong, diigo, etc.).
-For my diff sites, it appears they used diff user IDs, which is nice. However, they use the same user ID for all of the bookmarks for any given site, and IMO this kind of leaves a small footprint (i.e. you can see the same 2 pages saved consecutively on several websites).
-No extra crap.
-They are busy but they get the job done.
-Pretty aggressive sales, but certainly in a respectable way.
Well that's about all folks. I probably will be working with these folks again. If I have them do ~100+ SBs for 1 page, I'll post up another review about that.
All the best.
Al