Does webhosting have good earning potential? How all can you earn through webhosting? Any idea?

Webhosting may sound easy, but the amount of competition in the industry makes it hard. Also, like with any other type of business, it takes money to make money.

So if you're thinking of getting a reseller account and just sit back and watch the money roll in, you're going to be a little disappointed.

It takes hard work, a lot of hours and also money to be successful.

Yes, webhosting have good earning potential.
You will need hardwork, time, money and patience. I fully agree with what Plexihost said.

Thanks to both of you.

and the hard work never ends

I think this is the hardest industry.. Daily growth, Google Ranking, People Trust - We work with these.. Try to provide best services, best support.. Is Hardest

SEO is the key to this, we have found it really hard - but after much work have started to see growth in the last few months.

Agreed. SEO is definitely key. And an important part of SEO is: TIME, because results of SEO don't happen overnight. It can take months to start seeing any real results.