“The birth of SEO has seen the inevitable avalanche of "experts" setting up all over the world, and, as in any profession or trade, there are cowboys as well as the cavalry. Above all remember .... nobody can absolutely guarantee any result in SEO
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I've also been bitten by UK based SEO outfits, and mistakenly went for large professional looking expensive firms, but service, quality and whole experience was terrible.
For SEO advice or outsourced consultancy, I'd now only engage someone I know of by reputation on various business forums, where you can measure other peoples feedback and get a feel for the type of person they are.
Good SEO consultants are worth their weight in gold, but just like the directory market, with countless script generated ropey directories, the SEO industry also seems to suffer from an image problem.
Never come across Jill before, but interesting feedback from Tomsk, but I thought she did make some good points.