I've noticed this same pattern with other founders, notably Dennis Crowley with Dodgeball (location-based social network founded in 2000, sold to Google in 2005) and Foursquare (location based social network with different branding).
To be mean to him: Deciding to split Foursquare into Yelp-lite and a shitty social network was a terrible, terrible idea.
1. What I percieve to be excessive use of JS. You can't even load a blog post there (well, at least, couldn't last time I visited a dot-blogspot site) without an on-page spinner and a bunch of stuff apparently happening in the background.
2. The tld-redirect crap. Admitedly, I had actually thought a similar mechanism to be benefitial prior to seeing an actual implementation of it but I mean, come on, does this not annoy others? What's the advantage of that anyway? Google is capable of geographical load balancing with IP addresses alone just fine, what's the deal?
Disclaimer: These are my end-user reactions. I have never operated at the scale Blogger does so there may be reasons I am not aware of.
For me at least, I think it's much easier to keep track of places you've gone with your own reviews with swarm. And foursquare for finding new places you would want to go. I'm sure they could have built it in such a way that would only need one app, though I can't complain too much about the split.
It helps to get re-acquired once you have all the existing connections and the acquiring company knows you're not snake oil and aren't screwing them over.
There have been multiple Google->Startup->Google loops as well, but many of those are an acquihire-as-safety-net when the too hyped startup by too eager employees falls flat on its face.
Some companies end too early because the technology or capital wasn't there to let it get to its full potential. Also, those founders tend to be the people who understand the space the best because they're the ones with the most experience.