GP Bullhound, Europe's leading investment bank in technology and digital media, announced the results of the 2009 Media Momentum Top 50, a run down of the fastest growing digital media companies in Europe. Pure360, are the only ESP in the top 50, listed as number 18, with recorded revenue growth of 100.5% over the past two years.

The announcement of the top 50 highlights that despite the economic downturn; the digital industry is in robust health, with innovative firms continuing to show exceptional levels of revenue growth. Seatwave, the online fan-to-fan ticket exchange topped the table, with revenue growth of 2203.1%, followed by isango.com, BuyVIP and LeadPoint UK.

You can download the full report at mediamomentum.co.uk

We all get far more spam than mail we actually want to receive, so we protect ourselves with ever more complex spam filters, in an attempt to stem the flow of dating offers, male genital improvers and get rich quick schemes into our inboxes.

These spam filters are of course an industry in themselves and as the vast majority of email is spam, they occasionally get it wrong. Here are some pointers to avoid this happening to your mailings.

If you're a big brand sending millions of emails every month and you're using a professional email service provider (ESP), have you ever stopped to consider if you are actually getting good value?

Is spending upwards of £15,000 a month money well spent? Surely not when you tot up the annual total and realise that's over £180,000 on email marketing every year.