A Bitcoin address is a long string of 27 – 34 numbers and letters that acts similarly to an email address. The address enables the Bitcoin blockchain to recognize when bitcoins are sent and received. These addresses can be used by anybody, from single individuals to businesses to multiple people accessing the one address if desired. It is also considered more secure not to re-use addresses but rather to use a unique address every time you send and receive bitcoins. This increases the privacy of your transactions to a degree and helps in avoiding public tracking of your funds.