Is This A Sabotage?

Hey guys,

Today, thanks to Ahrefs, i've noticed that i have some weird looking links coming from Wiki sites with this anchor text: " SPAM DE-INDEX SPAM"

Here are some examples:

Main Page - A2z
Main Page - WikiTyer - The Ultimate Fly Tying Encyclopedia
Adref - Clwb Nofio Pwllheli

At first i thought that i have placed my link where i shouldn't have, and the admins have reported me as spam; but then i realized that i have never placed my URL on these websites (i've even gone through all the revisions).

But i do admit, that i have placed an article there with a link to my web 2.0 website (you know... tiered link building). I thought that i have screwed up BIG TIME (which i maybe did. Now i will never use Wikis as a backlinking method).

But then i've noticed that the Revisions that have "identified" my main URL as Spam were made by people with the same usernames:

• Skellyplumbing
• Anchorroofing

I don't know about you, but these usernames sure look suspicious, and i'll tell you why:

If you look at the bottom of the pages, you will see that there are still links there which point to some external websites:

• Houston Plumbers
• Houston Roofing Contractor

Now remember the usernames (Skelly Plumbing and Anchor Roofing... sounds familiar, right?)

Of course, there is a chance that these guys (or guy) own all of these Wikis, but i find that unlikely.

What do you think i should do? If that was an attempt to screw up my and other people's ranking, then i want revenge