Actually, i suggest not to spam wiki, some reasons below:

1. in my EXP, there is no any effect to your rank in each SE now.
2. many wikis setup in the .gov .org .edu domain.
3. most of wiki owners will find your spam and modify it quickly.

so, i think many bh wanna get backlink from wikis, yes you will and get many links, some years it's useful, but but there is no any valuable for the rank in SE now. you may try it

and BTW i have 1 software to submit wiki automaticly, it works so fine. because of no effer, i haven't use it any more.

the tools which i use to post the wiki is a Chinese tool:
it names: WIKI英文群发软件
i don't know if you can seee its name. it's chinese. tranlate to english:
you may call it: English WIKI blaster.
if you can read Chinese, you may visit h**p://www.se*orj.cn/html/1/0/29/1.htm

anyway i don't recommend you to buy or use this kind of the soft, i mean wiki blast.