This would not surprise me.
There has been an alliance of effort between Mark's List and The South Florida Blade/411 in recent months. I began to notice some co-sponsorship of events I was covering/attending. You could almost smell an impending marriage. Even so, no acquisition is bloodless. If this union is what will infold, I will be interested in seeing what Mark's List does with what they acquire. There will be more than just a name change.
UPDATE: Suspicions correct: Here's Mark Haines' statement.