Free online keyword list builder/editor

(moved frm the wrong forum)

I generally work with long lists of core keywords then long tail them with generic words at the start and end of each original keyword.

I've used things like batch keyword cleaner in the past but it was insanely slow - I got recommended to use the online link below. It's really quick and I can fire zip files of keywords at it and it will handle it all for you.

http://blackhatinsider.com/keywordtools/keywordlistbuilder.php

I did notice it wont insert spaces though, got around this by using a - which is what my phrases use as seperators anyway.

Hope this is useful, and maybe you guys have some alternatives or other great tools I can use.