Labels could have, at most, 200 characters of labels (including spaces and commas). Today, we see reports of newly discovered limits, again in labels.
We see more requests.
How can I put more than 2000 Labels on my blog?
I'm seeing "A post may have at most 10 labels." when I try to publish. Help!
and even a couple complaints
I don't have 2,000 labels, but it's telling me that I do!
That's going to hurt a few bloggers!
Apparently Blogger released changes to Post Editor, and added limits to labels. These changes won't be as popular as the previously noted change.
Blogger Support advised us, on 10/22/2009, that we are likely to be limited to 5,000 labels / blog, for eternity.
After listening to the feedback left in this thread and in other places, we've decided after some discussion to go ahead and increase the per-blog label limit to 5000 labels.
Note the limit to the concession, and the stern warning.
Please plan your labeling accordingly moving forward, as performance issues will prevent us from increasing the limit again down the line.
Everything has its limits - and this is a limit that we may all have to learn to live with.