Well, I was very likely wrong to suggest that the review below was possibly by the developer. First, the software is good quality, not the sketchy variety usually associated with unethical reviews. Second, there are no suspicious-looking reviews for this dev's other product. Third, I've been in brief email contact with the dev, and he seems very helpful and forthcoming.
I changed my mind about buying LLB too. I like the elegant layout and smooth keyboard navigation in particular. Also, its most direct competition, AllBookmarks, doesn't seem to have much development going on right now. It works fine, but it seems to have reached a point where they probably won't do much more with it feature-wise (fair enough, considering all the work the folks at Agile put into 1Password). Since LLB is at version 1.0, I think it's safe to expect some substantial improvements in the future.