You could just as easily say that fixing cars is easy to do, so you hate mechanics. Or cleaning your house is easy to do, so you hate cleaners. Or gardening is easy, so you hate professional gardeners. And so on.
I think the above is completely different, mainly as fixing cars requires a body of knowledge, and is one of the more skilled trades. PPC can be learnt in a few hours, and there's no need for keyphrases that much as most will type in keywords eg: Car Rental in Bedfordshire etc etc. And don't forget that there's limited space of 35 characters with Adwords, so keyphrases aren't the best use of available advert space.
Writing basic adwords ads give good results and it's more about choosing a half-decent headline, so the ads get clicked on. I've seen some ads at No 3 position, get higher clicks than ones at No1, and it didn't cost me £800 in 'consultancy' fees either. Oh, dang, but I made a mistake with my ad copy

omg, what am I going to do now, better call in a consultant, oh hang on, but I can alter ads myself in 10 minutes using PPC, so looks like I don't need a consultant does it..... and I can keep doing exactly that until I get it perfect. Nice.
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yeah, like anyone in their right mind will do that - dream on.
You're completely overlooking things like keyphrase match types - for example, the exact phrase "books about dogs" which will only show your ad in searches for that exact phrase, compared to the broad phrase "books about dogs", which will show your ad if someone searches for "science fiction books"
Oh please, look - your undermining the basic premise of simplicity of PPC. You're telling me that most people that run businesses don't know the basics of how to write simple, basic adverts. But they do, anyone can type in a basic advert using adwords and its teachable in about 5 mins flat, bcos if you can use a search engine then you can write a keyword advert - I'm sorry but your making this out to be more difficult than it actually is.
I'm not some marketing expert, but I threw together a very basic advert and it got me 89 clickthroughs within a few days. So that's how I know!
It's not so much about each advert, more to do with putting more adverts out there. 3 okayish adverts will do better than a single okayish advert.
You find out what works and then roll it out on a larger scale. Or use more little adverts. Now what is so difficult about that.
(b) finding enough time in your already busy working day to carry out these tasks yourself.
Come on, noone's that busy that can't keep tabs on their own basic advertising. And if they ARE keeping watch, then they must have a fairly basic knowledge in the first place, bcos there's no way I'd just let even the most professional company run riot with my money - without knowing something about what's involved and their 'profession'. This way, I can control things more, have some idea whether what their suggesting will work or not, and thus pull out if things go pear shaped!
I wouldn't simply trust anyone based on a damn cold-call
