I have had two WordPress blogs hacked into in the past. That was at a time when I was doing very little internet marketing, and until I found time to address the situation (months later), these sites were penalised in the search engines. They were not removed, but the rankings were reduced.
Install the secure your wordpress site Firewall Plugin. This plugin investigates net requests with straightforward WordPress-particular heuristics to recognize and quit obvious attacks.
Use strong passwords - Do your best to use a password, alpha-numeric. Easy to remember passwords are also easy to guess!
This is quite useful plugin, protecting you against brute-force password-crack strikes. It keeps track of the IP address of every failed login attempt. You can configure the plugin to disable login attempts when a certain number of attempts is reached.
You may check over here extend the plugin features with premium plugins like: Amazon S3 plugin, Members only plugin, DropShop etc.. So I think this plugin is a good choice and you can use it for free.
Implementing all the above will take less than an hour to complete, while creating your WordPress click over here website more immune to intrusions. Over 1 million WordPress sites were cracked last year, largely due to easily preventable security gaps. Have yourself prepared and you're likely to be on the safe side.